Abstract
Tillage experiment was conducted for two years (2006-2007) to monitor the effect of selected soil physicochemical properties of an ultisol and adaptability of direct seeded upland rice in Abakaliki. The experiment was established in a randomized complete block design (RCBD). The tillage methods investigated were two compaction passes with or without mulch, tillage with or without mulch and non-tillage with or without mulch. Results showed that soil compaction increased dry bulk density and surface resistance penetration of the soil. Tillage with mulch increased gravimetric water content and total porosity but reduced bulk density and soil surface resistance to penetration. The introduction of mulch in this study reduced bulk density in any of the tillage system, where it was applied. Root growth densities and grain yield were affected by the tillage system. The various tillage systems concentrated root development within the 0-10 cm dept of the soil. Compaction reduced root development at 20-30 cm depth. The tilled plots with mulch gave a 35% increase in grain yield in 2006 and 29% in 2007 over the no tilled plots without mulch. This showed that tillage with mulch plots gave better grain yield than plots without tillage both with mulch or no mulch.Keywords: Tillage, mulching, tillering, physical soil properties, ultisol, grain yield, upland rice
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Soil compaction raised bulk density and surface penetration resistance.
- Taxon
- upland rice
Oryza sativae1 - Treatment
- soil compactione0
- Outcome
- dry bulk density and surface resistance penetration of the soile0
- Direction
- increasede0
- Setting
- Abakalikie1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil compaction increased dry bulk density and surface resistance penetration of the soil.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage with mulch increased soil water content and porosity.
- Taxon
- upland riceOryza sativae1
- Treatment
- Tillage with mulche0
- Outcome
- gravimetric water content and total porositye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage with mulch increased gravimetric water content and total porosity”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage with mulch reduced bulk density and surface penetration resistance.
- Taxon
- upland riceOryza sativae1
- Treatment
- Tillage with mulche0
- Outcome
- bulk density and soil surface resistance to penetratione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage with mulch increased gravimetric water content and total porosity but reduced bulk density and soil surface resistance to penetration.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Mulch reduced bulk density in every tillage system where applied.
- Taxon
- upland riceOryza sativae1
- Treatment
- mulche0
- Outcome
- bulk densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The introduction of mulch in this study reduced bulk density in any of the tillage system, where it was applied.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage systems affected rice root growth density.
- Taxon
- upland riceOryza sativae1
- Treatment
- tillage systeme0
- Outcome
- Root growth densitiese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root growth densities and grain yield were affected by the tillage system.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage systems affected rice grain yield.
- Taxon
- upland riceOryza sativae1
- Treatment
- tillage systeme0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root growth densities and grain yield were affected by the tillage system.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Root development was concentrated at 0-10 cm under the various tillage systems.
- Taxon
- upland riceOryza sativae1
- Organ / stage
- roote0
- Outcome
- root developmente0
- Value
- 0-10 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The various tillage systems concentrated root development within the 0-10 cm dept of the soil.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Compaction reduced rice root development at 20-30 cm depth.
- Taxon
- upland riceOryza sativae1
- Treatment
- Compactione0
- Outcome
- root developmente0
- Direction
- reducede0
- Qualifier
- 20-30 cm depthe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compaction reduced root development at 20-30 cm depth.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage with mulch raised rice grain yield by 35% in 2006 over no tillage without mulch.
- Taxon
- upland riceOryza sativae1
- Treatment
- tilled plots with mulche0
- Outcome
- grain yielde0
- Direction
- increasee0
- Value
- 35%e0
- Qualifier
- 2006e0
- Comparator
- no tilled plots without mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tilled plots with mulch gave a 35% increase in grain yield in 2006 and 29% in 2007 over the no tilled plots without mulch.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage with mulch raised rice grain yield by 29% in 2007 over no tillage without mulch.
- Taxon
- upland riceOryza sativae1
- Treatment
- tilled plots with mulche0
- Outcome
- grain yielde0
- Direction
- increasee0
- Value
- 29%e0
- Qualifier
- 2007e0
- Comparator
- no tilled plots without mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tilled plots with mulch gave a 35% increase in grain yield in 2006 and 29% in 2007 over the no tilled plots without mulch.”
e1“upland rice in Abakaliki”
Claim · model-written summary
Tillage with mulch yielded more than no tillage with or without mulch.
- Taxon
- upland riceOryza sativae1
- Treatment
- tillage with mulche0
- Outcome
- grain yielde0
- Direction
- bettere0
- Comparator
- plots without tillage both with mulch or no mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillage with mulch plots gave better grain yield than plots without tillage both with mulch or no mulch.”
e1“upland rice in Abakaliki”
The same questions in other papers
mulching · yield · Oryza sativa (rice)Results differ
105 papers in the same direction as this paper · 17 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
122 papers more in this group
See all 126 papers →tillage · disease · Oryza sativa (rice)Positive and negative results
16 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
19 papers more in this group
See all 23 papers →tillage · soil: physics · Oryza sativa (rice)Positive and negative results
34 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
37 papers more in this group
See all 41 papers →tillage · growth · Oryza sativa (rice)Positive and negative results
32 papers in the same direction as this paper · 116 in the opposite direction
- positive
- positive
- positive
145 papers more in this group
See all 149 papers →tillage · yield · Oryza sativa (rice)Positive and negative results
586 papers in the same direction as this paper · 115 in the opposite direction · 27 reporting no difference from an alternative
- negative
- negative
- negative
725 papers more in this group
See all 729 papers →mulching · disease · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
mulching · soil: physics · Oryza sativa (rice)Results agree
12 papers in the same direction as this paper
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.